Chemical Products 2-Bromo-4-chlorophenol Description

Chemical Products 2-Bromo-4-chlorophenol Description
White to slightly beige low melting solid

Chemical Products 2-Bromo-4-chlorophenol Basic Attributes
CAS No:695-96-5

Molecular Formula :C6H4BrClO

Molecular Mass :207.451

Exact Mass :205.913391

PSA :20.2 A^2

LogP :3.2

EINECS :211-785-6


H-bond Acceptor :1

H-bond Donor :1

SP3 :0.00

RBN :0

Chemical Products 2-Bromo-4-chlorophenol Characteristics
Density :1.8±0.1 g/cm3

Melting Point :31-33 °C(lit.)

Bolling Point :248.6°C at 760 mmHg

Flash Point :92.2±21.8 °C

Refractive Index :1.619

Solubility :methanol: 0.1 g/mL, clear

Chemical Products 2-Bromo-4-chlorophenol Safety Information
Packing Group :I; II; III

HS Code :2908199090

UN No. :UN 2020 6.1/PG 3

WGK_Germany :3

Risk Code :R36/37/38

Safety Instructions :S26-S28-S36/39-S24/25

Dangerous Mark :Xi:Irritant;

P Code :P261-P305 + P351 + P338

Hazard Statements :H315-H319-H335

Chemical Products 2-Bromo-4-chlorophenol Production Methods
General procedure: To a 10 mL round bottom flask equipped with a magnetic stir bar were added phenols or alkenes (0.1 mmol), CBrGeneral procedure: To a magnetic solution of aromatic compound (1 mmol)in acetonitrile (5 mL), OXBTEATB (0.233 g, 0.5 mmol) wasadded and stirred at room temperature for the appropriatetime (Table 1). The reaction was monitored by TLC (eluent:n-hexane/ethyl acetate: 5/1). The reaction mixture was transferredinto a separatory funnel after filtration of OXBTEABand was extracted with water (15 mL) and dichloromethane(20 mL). The organic layer was dried over anhydrousNa2SO4, and the solvent was concentrated in a rotary evaporator.The crude product was purified by passing it over acolumn of silica gel using a mixture of n-hexane and ethylacetate as the eluent. In order to regenerate the reagent, whitesolid was treated with liquid bromine. All the product structureswere confirmed by comparison of melting point or 1HNMR spectra with ones reported in the literature [29a-29e].General procedure: The general method for ultrasonically assisted brominationreaction is almost similar to conventional reaction as mentionedabove. A centimolar (0.01 mol) organic substrate (phenols, anilines, or acetanilides), 0.001 mol potassium halide(KBr), about 50 mg of dilute KHSO4, and hypervalent Cr(VI) reagent (IQCC or IQDC) were suspended in about30 mL solvent (DCE or ACN) in a previously cleaned roundbottom(R.B) flask placed in a sonicator. The reaction mixtureis sonicated at room temperature about 30–40 min. Progressof the reaction was monitored by TLC technique. Workupprocedure after completion of the reaction mixture is similarto the one described previously.

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